Multiple Choice
Epithelial surfaces provide the first line of defense against infection by the use of several types of mechanisms. One of the chemical mechanisms used by epithelia is:
A) Joining of epithelial cells by tight junctions
B) Secretion of antimicrobial peptides by epithelial cells
C) Production of mucus, tears, or saliva in the nose, eyes, and oral cavity
D) Movement of mucus by cilia
E) Peristalsis in the gastrointestinal tract
Correct Answer:
Verified
Correct Answer:
Verified
Q1: The production of antimicrobial peptides is one
Q3: The C3 convertase of the alternative complement
Q4: Neutrophils regulate the production of active cathelicidins
Q5: Opsonization of pathogens by both antibodies and
Q6: The importance of complement activation as an
Q7: Streptococcus pneumoniae is a Gram-positive bacterium that
Q8: Mannose binding lectins (MBL) and ficolins are
Q9: Although the complement cascade can be initiated
Q10: The C3 convertase amplifies the process of
Q11: Although homozygous deficiencies in complement regulatory proteins